New Ground Reactions Code

Improvements to the JSBSim ground reactions code have been contributed and tested with success. Bertrand writes about his work:

"... I have written some code to improve the computation of the friction forces of the landing gears in JSBSim. It is based on the paper from Erin Catto. This paper explains very well how Lagrange multipliers and the projected Gauss Seidel algorithm can be used to determine friction forces. ... I have to admit that the result was beyond my expectations. ... Still the aircraft is behaving well when on ground (even in windy conditions). I have also tested this code on Flight Gear and it worked very well too."

We are still in testing, and work continues in other areas of JSBSim, too.